Answer:
35 Apples
35:21
Explanation:
21 Oranges divided by 3=7
7 Oranges X 5 Apples=35
if there's 3 oranges per 5 apples
you would do 21/3=7
no since there's 5 for every 3
you would multiply 5 by the number you got after diving by 3
then multiply that answer by 5
because you divided it by 3 to make it "to scale" so now you have to re-multiply it by 5